Abstract: This invention relates to the use of an isocyanate blocked imidazole or imidazoline compound as a catalyst for effecting cure of powdered epoxy resins. The isocyanate blocked imidazole or imidazoline imparts an extended pot life to a curable epoxy powder coating composition while effecting cure at substantially lower temperatures than normally would be required and with faster cure times.

Abstract: In the production of cellular products by reaction of polyols with organic isocyanates, alkali metal salts of acidic azoles are employed as all or part of the tertiary amine catalyst for promoting the reaction. Alkali metal salts of tolyltriazole are designated in the preferred examples for production of polyurethane and polyisocyanurate foam products.

Abstract: This invention relates to an improved three component promoter for enhancing the cure rate of a molding compound comprising an unsaturated polyester resin and an unsaturated monomer copolymerizable therewith. The presence of the three component promoter system substantially enhances the cure rate of the molding compound while at the same time substantially lengthening the shelf life of the prepromoted resin. The three component system comprises a cobalt salt in the plus 2 valence state with the cobalt being present in an amount to provide from about 0.0005-0.06 parts cobalt metal per 100 parts unsaturated polyester resin (including unsaturated monomer), a copper salt, the salt being present in an amount to provide from 0.01-1.times.10.sup.

Abstract: This invention relates to epoxy powder coatings which have excellent shelf life at ambient temperature (70.degree. F.) with excellent cure rates at curing temperatures, the epoxy resin containing a latent amine salt of bis-phenol A, the amine represented by the formula: ##STR1## wherein n is 2 or 3, and R is a C.sub.1 -C.sub.4 alkyl group.

Abstract: This invention relates to a catalyst system comprising a triethylene diamine salt of thiocyanic acid for epoxy powder coatings, the epoxy compound having a lower softening point of not less than 40.degree. C. The catalysts for these coatings have latent activity in that they remain substantially inactive during mixing and extruding, but are highly effective at the cure temperatures.

Abstract: This invention relates to an improved process for preparing halogenated metal chelates of beta-dicarbonyl compounds, particularly the tris-brominated acetylacetonates. The process comprises passing elemental halogen through a solution comprising the metal chelate, an inert solvent in which the metal chelate has a solubility of at least 0.5 grams per 100 grams solvent and the halogenated product has a solubility of less than 1 gram per 100 grams solvent and a halogenated Lewis acid at a temperature from about 0.degree.-60.degree. C. thereby forming a halogenated metal chelate precipitate and then recovering the precipitate.

Abstract: This invention relates to an improvement in a process for curing unsaturated polyester resins, preferably chemically thickened with a Group II metal oxide or hydroxide, and to the resulting product. The improvement resides in the use of an acetylacetonate ligand of cobalt III, which is mono, di, or tri-substituted with an electron withdrawing group, e.g. a nitro, phenyl or halogen atom.

Abstract: Certain quaternary ammonium salts are incorporated in unsaturated polyester thermosetting molding compositions containing peroxyketal initiators to accelerate free radical initiated curing of these compositions.